Updating Channel

Only the channel owner can update channel.

TPChannel? channel = await TalkPlusAPI.updateChannel(
    tpChannel, 
    maxMemberCount, 
    hideMessagesBeforeJoin, 
    channelName, 
    invitationCode, 
    category, 
    subcategory, 
    imageUrl, 
    metaData,
    errorCallback: (errorCode, errorMessage){}
);